Steel guide for submarine drills



May 8, 1928.

C. C. HANSEN STEEL GUIDE FOR SUBMARINE DRILLS Filed Oct. 5. 1927 2 Sheets-Sheet 1 VENTOR.

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c. c. HANSEN STEEL GUIDE FOR SUBMARINE DRILLS Filed O t- 5. 1927 2 Sheets-Sheet 2 E; Fig-5 INVENTOR. (ha *leSCI IanJen BY Hfj ATT RNEY Patented May 8, 1928.

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CHARLES C. HANSEN, 0F E ASTON, EENNSYLVANIA, ASSIG-NGR TO INGEESOLL-RAND COMPANY, OF JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW] JERSEY.

STEEL GUIDE FOR SUBMfsItIIi-E DER-ILLS.

Application filed October 5, 1927. Serial No. 224,163.

This invention relates to submarine drills, but more particularly to the type of submarine hammer drill unit disclosed in United States Patent No. 1,645,989, granted to Charles C. Hansen October 18, 1927, in which a spud or guide frame is adapted to rest on the loose material at the bottom and the movable drilling element carries the drill steel which is inserted in the tubular mud guard carried by the spud.

5 to the drilling element so as to move therewith, but is capable of separate adjustment from a point at the surface. Means are also.

provided for taking up slack and keeping the flexible connections taut between the steel guide and the drilling element in any position of the parts.

The invention is shown in the aocoinpanying drawings in one of its preferred forms, in which:

Figure 1 is an end elevation, partly in vertical section and partly broken away, illustrating so much of a barge and drill unit as will serve to illustrate the invention,

Figure 2 is an enlarged detail elevation, partly in vertical section and partly broken away, showing the steel guide,

Figure 3 is a transverse sectional view of Figure 2 on the line 83 looking in the direction of the arrows,

Figure 4 is a side elevation of part of a barge and two drilling units, and

Figure 5 is an enlarged detail sectional elevation of one of the counterweights for the drill steel guide with protective casing.

Referring to the drawings, a barge A shown partly broken away has mounted thereon one or more submarine hammer drill units B, in this instance two being shown in Figure 4:. Each unit has a main frame C provided with the guides D in which the guide frame E slides. This guide frame E is in the form of a spud having the shoe or foot piece F adapted to rest on the bottom. A drilling element in the form of a hammer drill G is carried by a drilling frame H and is guided on the guides J carried by the spud. A mud guard or protective shield K adjustably carried by the foot piece F is adapted to be forced through the loose material on top of the rock to be drilled. In Figure 1 the foot piece F of the spud shown rested on the loose material L, and in Figure lfboth spuds are shown resting upon the loose material L. In some cases to be assumed that the loose material is of such a light nature, in the form of silt, that the spud may pass through down to the solid rock.

The weight of the rock drill G and drilling frame is adapted to rest on the top P of the mud guard during the drilling operation and force the mud guard through the loose material L. The rock drill carries a hollow drill steel Q, which extends through the mud uard during the drilling operation. A motor t having the drum S operates the winding cable T for raising and lowering the spud and a separate motor and drum U having the cable V may be provided for raising and lowering the drill frame H.

in accordance with this invention a drill steel guide a in the form of a plate is located between the rock drill and the mud guard and is guided on the guides J of the spud as shown, particularly in Figure 3. In order to raise and lower the drill steel guide a, flexible connections 7) are connected to the guide and are carried upwardly over sheaves a mounted on the drilling frame H. In order to keep the connections 6 taut, counterweights 01 are connected to the ends of the connections I) and these counterweights slide in protective casings or tubes e.

In accordance with this construction, when the drilling frame H and rock drill Gr are lowered, the drill steel guide a is lowered upon the top of the mud guard K and the rock drill rests upon the drill steel guide. When the drilling frame H is raised, the counterweights b are sufficient to balance the weight of the drill steel guide and the guide is raised with the drilling frame. By this means the drill steel is guided both during the drilling operation and during the changing of steels.

I claim:

1. A submarine drill unit, having a main frame and guides, a vertically movable guide frame on said guides, a drilling element slid ably carried by and guided on said guide frame, a tubular mud guard adjustably supported at the lower end of said guide frame below the drilling element whereby the weight of the drilling element may rest upon the mud guard to force it down to the rock to be drilled, a drill steel guide adjustable vertically on the guide frame, sheaves at the upper portion of the drilling element, and flexible connections extending from the steel guide upwardly and over said sheaves, whereby the steel guide moves upwardly with the drilling element and descends by gravity.

2. A submarine drill unit, having a main frame and guides, a vertically movable guide frame on said guides, a drilling element slidably carried by and guided on said guide frame, a tubular mud guard adjustably supported at the lower end of said guide frame below the drilling element whereby the weight of the drilling element may rest upon the mud guard to force it down to the rock to be drilled, a drill steel guide adjustable vertically on the guide frame, sheaves at the upper portion of the drilling element and flexible connections extending from the steel guide upwardly and over said sheaves, whereby the steel guide moves upwardly with the drilling element and descends by gravity, and counterweights connected to said flexible connections to take up slack and keep the connections taut. I

8. A submarine drill unit, having a main frame and guides, a vertically movable guide frame on said guides, a drilling element slidably carried by and guided on said guide frame, a tubular mud guard adjustably supported at the lower end of said guide frame below the drilling element whereby the weight of the drilling element may rest upon the mud guard to force it down to the rock to bedrilled, a drill steel guide adjustable vertically on the guide frame, sheaves at the upper portion of the drilling element and flexible connections extending from the steel guide upwardly and over said sheaves, whereby the steel guide moves upwardly with the drilling element and descends by gravity, counterweights connected to said flexible connections to take up slack and keep the connections taut. and protective housings for said counterweights carried by the drilling element.

In testimony whereof I have signed this specification.

CHARLES C. HANSEN. 

